Another speculation that I could make is that an iMac G5 Revision B and new eMac's should be soon released. That would be because Mac OS "Tiger" has the new Core Image key technology. This technology is as important as Quartz. So, to make it work, it requires 64MB of VRAM (Quartz requires 32MB). iMac G5 and eMac's has a 32MB VRAM graphics card. So new revision of both models should be considered must-be-done. As about Mac mini, which has a 32MB VRAM too, it would be really disappointning for "just-been" Mac mini users to release a Revision B. So there are two possibilities for it: push it to 64MB or leave it as is. That's all for now.